()___should not be allowed to go out at night A.Twelve-years-old B.Twelve-year-olds

问题描述:

()___should not be allowed to go out at night A.Twelve-years-old B.Twelve-year-olds
C.Twelve year old D.Twelve years olds
希望能有一个详细的解释、不要太勉强的解释哟.真心不懂这个题(ˇˍˇ)

应该是B,Twelve-year-olds.A和D英语里没有这种表达.C是形容词.B是名词.意思是:12岁的孩子晚上不允许(容许;准许)出门在外.例:---Why can't he live here now?---Because he can't!---Because why?---Because eight-year-olds can't be parents!